In the wake of her parents' tragic demise, Lia dedicates herself to mastering swordplay for her family's defense. Despite rising as the sole female leader of a knights' unit in the Empire, her path is riddled with obstacles, particularly from the troublesome Duke Edgar. Yet, amidst their adversarial dynamic, an unexpected twist emerges – why does this supposed 'foe' exhibit a telltale blush whenever their eyes meet?